US9455765B2 - Communications connectors having frequency dependent communications paths and related methods - Google Patents
Communications connectors having frequency dependent communications paths and related methods Download PDFInfo
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- US9455765B2 US9455765B2 US14/342,826 US201214342826A US9455765B2 US 9455765 B2 US9455765 B2 US 9455765B2 US 201214342826 A US201214342826 A US 201214342826A US 9455765 B2 US9455765 B2 US 9455765B2
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- conductive paths
- communications
- crosstalk
- plug
- communications connector
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- 230000004044 response Effects 0.000 description 12
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Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/32—Reducing cross-talk, e.g. by compensating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6461—Means for preventing cross-talk
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
- H01R24/62—Sliding engagements with one side only, e.g. modular jack coupling devices
- H01R24/64—Sliding engagements with one side only, e.g. modular jack coupling devices for high frequency, e.g. RJ 45
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2107/00—Four or more poles
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0228—Compensation of cross-talk by a mutually correlated lay-out of printed circuit traces, e.g. for compensation of cross-talk in mounted connectors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10189—Non-printed connector
Definitions
- the present invention relates generally to communications connectors and, more particularly, to communications connectors that may exhibit improved performance over a wide frequency range.
- FIG. 1 illustrates the manner in which a computer 10 may be connected to network equipment 20 using conventional communications plug/jack connections.
- the computer 10 is connected by a patch cord 11 to a communications jack 30 that is mounted in a wall plate 18 .
- the patch cord 11 comprises a communications cable 12 that contains a plurality of individual conductors (e.g., insulated copper wires) and first and second communications plugs 13 , 14 that are attached to the respective ends of the cable 12 .
- the first communications plug 13 is inserted into a communications jack that is provided in the computer 10 (this jack is not visible in FIG.
- crosstalk refers to unwanted signal energy that is induced onto the conductors of a first “victim” differential pair from a signal that is transmitted over a second “disturbing” differential pair.
- FIG. 3 is a block diagram of a communications connector according to embodiments of the present invention.
- FIG. 5 is a perspective view of a communications plug according to embodiments of the present invention.
- FIG. 10 is a schematic plan view of a flexible printed circuit board of the communications jack of FIG. 9 .
- FIG. 11A is a graph schematically illustrating the frequency response of the low pass filters and high pass filters according to some embodiments of the present invention.
- the first set of conductive paths may be designed to meet applicable industry standards for one or more of NEXT, FEXT, insertion loss, return loss, conversion loss and the like so that the communications connectors will comply with various industry standards.
- the second set of conductive paths may be designed to have reduced crosstalk along with acceptable insertion loss, return loss, conversion loss and the like for frequencies in the range of, for example, 500 MHz to 3000 MHz or more so as to provide high channel capacity in this higher frequency range.
- each conductive path in the first set of conductive paths may be substantially isolated from its parallel conductive path in the second set of conductive paths.
- the communications connector may comprise an RJ-45 plug, and each of the eight communications paths through this RJ-45 plug may split into two different paths, with a low pass filter provided on one of the two paths and a high pass filter provided on the other of the two paths to provide low and high frequency conductive paths.
- These filters may be implemented for example in one or more printed circuit board mounted integrated circuit chips or as discrete components mounted on a printed circuit board.
- first and second low pass filters may be provided on each low frequency conductive path and/or first and second high pass filters may be provided on each high frequency conductive path so as to allow frequency band specific processing to be performed on either or both low frequency signals and/or high frequency signals that are passed through the connector.
- the signal path splitter circuit 220 splits each of the conductive paths 212 that are input thereto into two conductive paths 224 , 226 .
- the signal path splitter circuit 220 may comprise, for example, a plurality of conductive traces, each of which has another conductive trace branching off therefrom.
- Each of the conductive paths 224 that comprises the first output from the signal path splitter circuit 220 is coupled to a corresponding one of a plurality of low frequency conductive paths 230 .
- the low frequency conductive paths 230 are formed using a first bank of low pass filters (the bank of low pass filters is labeled “LPF” in the drawings) 232 and a second bank of low pass filters 236 .
- each of the eight plug blades 340 comprises a wire that is mounted into spaced-apart apertures in the printed circuit board 330 .
- a first end of each wire is mounted in a first aperture in the printed circuit board 330
- a second end of each wire 340 is mounted in a second aperture in the printed circuit board 330 .
- Each wire forms a “skeletal” plug blade 340 .
- skeletal it is meant that the plug blade 340 has an outer skeleton or shell and a hollow or open area in the center.
- each blade 340 has an open interior.
- the communications plug 300 only performs signal conditioning on the low frequency conductive paths 380 (namely, the injection of offending crosstalk between selected differential pairs), and does not perform any signal conditioning on the high frequency conductive paths 382 .
- signal conditioning may alternatively or additionally be performed on the high frequency conductive paths 382 .
- the high frequency conductive paths may include first and second high pass filter integrated circuit chips (as opposed to the single chip 362 provided in plug 300 ) in order to isolate the effects of this signal conditioning from the low frequency conductive paths.
- an IDC is a type of wire connection terminal that may be used to make mechanical and electrical connection to an insulated wire conductor.
- Terminal cover 418 includes a plurality of pillars that cover and protect the IDCs 450 . Adjacent pillars are separated by wire channels. The slot of each of the IDCs 450 is aligned with a respective one of the wire channels. Each wire channel is configured to receive a conductor of a communications cable so that the conductor may be inserted into the slot in a respective one of the IDCs 450 .
Abstract
Description
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/342,826 US9455765B2 (en) | 2011-09-07 | 2012-07-02 | Communications connectors having frequency dependent communications paths and related methods |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161531723P | 2011-09-07 | 2011-09-07 | |
PCT/US2012/045190 WO2013036319A1 (en) | 2011-09-07 | 2012-07-02 | Communications connectors having frequency dependent communications paths and related methods |
US14/342,826 US9455765B2 (en) | 2011-09-07 | 2012-07-02 | Communications connectors having frequency dependent communications paths and related methods |
Publications (2)
Publication Number | Publication Date |
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US20140226455A1 US20140226455A1 (en) | 2014-08-14 |
US9455765B2 true US9455765B2 (en) | 2016-09-27 |
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Family Applications (1)
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US14/342,826 Active 2033-04-22 US9455765B2 (en) | 2011-09-07 | 2012-07-02 | Communications connectors having frequency dependent communications paths and related methods |
Country Status (2)
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US (1) | US9455765B2 (en) |
WO (1) | WO2013036319A1 (en) |
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US9806761B1 (en) | 2014-01-31 | 2017-10-31 | Kandou Labs, S.A. | Methods and systems for reduction of nearest-neighbor crosstalk |
US9819522B2 (en) | 2010-05-20 | 2017-11-14 | Kandou Labs, S.A. | Circuits for efficient detection of vector signaling codes for chip-to-chip communication |
US9832046B2 (en) | 2015-06-26 | 2017-11-28 | Kandou Labs, S.A. | High speed communications system |
US9838234B2 (en) | 2014-08-01 | 2017-12-05 | Kandou Labs, S.A. | Orthogonal differential vector signaling codes with embedded clock |
US9838017B2 (en) | 2010-05-20 | 2017-12-05 | Kandou Labs, S.A. | Methods and systems for high bandwidth chip-to-chip communcations interface |
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